Adding and Subtracting Fractions with Unlike Denominators Flashcard

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

Front

What does it mean to have unlike denominators?

Back

Unlike denominators are when the bottom numbers of two or more fractions are different, making it necessary to find a common denominator to add or subtract them.

Front

How do you find the least common denominator (LCD) of two fractions?

Back

To find the LCD, list the multiples of each denominator and find the smallest multiple that both denominators share.

Front

What is the least common denominator for the fractions 2/9 and 5/6?

Back

The least common denominator for 2/9 and 5/6 is 18.

Front

How do you convert fractions to like denominators?

Back

To convert fractions to like denominators, find the least common denominator and adjust each fraction by multiplying the numerator and denominator by the same number.

Front

What is the process for adding fractions with unlike denominators?

Back

1. Find the least common denominator. 2. Convert each fraction to an equivalent fraction with the common denominator. 3. Add the numerators and keep the common denominator.

Front

What is the process for subtracting fractions with unlike denominators?

Back

1. Find the least common denominator. 2. Convert each fraction to an equivalent fraction with the common denominator. 3. Subtract the numerators and keep the common denominator.

Front

Add the fractions 1/2 and 3/8.

Back

7/8

Front

Subtract the fractions 5/6 and 1/4.

Back

7/12

Front

Add the fractions 2/5 and 1/3.

Back

11/15